Floor ventilator



March 5, 1929. M- FE-IBER 1,704,661

' FLOOR VENTILATR Filed Deo. 27, 1927 2 Sheets-Sheet l March' 5, 1929. M. FElBER FLOOR VENTILATOR Filed Dec. 27, 1927 2 Sheets-Sheet 2 Patented Mar. 51929,

"MEnvILLE- FEIBER, or CHICAGO, ILLINOIS.

FLOOR vnN'rILAToa.

Appiieaun meaneember 27, 1227. serial Ne. 242,710.

invention relates to floor ventilators particularly designed and adapted forsupplying fresh air to auditoriums, t-heatres, and

other relatively large rooms in which considerable numbers of people congregate, without exposing occupants of the room to drafts of air. Q

Ventilators of the type to which the present invention relates are usually installed under stationary seats where they will be out-of the way and to a large extent concealed. One object of the invention is to simplify and improve the construction of ventilators of the type specified and 'to eliminate, as far vas practically possible, loose and detachable parts which, by working loose or falling off, are liable to impair the operativeness-and efficiency of the ventilator, in whole or in part.

Afurther object of the invention is to provide improved andV simplified means for securing the ventilatorsin position, whereby they'may be installedan'd removed quickly, conveniently and economically. Still a further object of the inventionis to provide simple `meansof new and novel construction for opening and closing the dampers which control the air discharge passageways through ventilators ofthe type specified.

I .To effect the objects of the invention, my improved ventilator comprises the various features, combinations of features and details of vconstruction hereinafter described and claimed. l

In theaccompanying drawings, in which myinvention is fullyillustrated,`

, Figure l is a top plan View of a ventilator embodying myinvention and improvements;

Figure 2 is an enlarged sectional plan View 'Lthereof on the line 2-2 of Fig. 1l; Figure 3 is an enlarged bottomv plan'view of the ventilator; A

Figurea is anenlarged sectional elevation on the line H of Fig. l; and

lFigure 5 is an enlarged sectional elevation on the line'- of Fig.l l. a Y l Describing my improved ventilator with particular reference to the drawings, said ventilator, designatedV as a whole A, comprises a body-portion o r housing a, said bodyv portion or housing being hollowand forming a substantially rectangular box-shaped structure, the top 'l and sides 2,'2, of which are closed, Aand the ends 3,3l and bottom 4 of which are open., In use, the ventilator-is adapted to be installed with thebottom-open- .ing l in communication with the discharge end of a iiue',:indicated at 5, FigsfiL and- 5, which may be assumed to communlcatevvith 'an air supply trunk, notshown, in a usual manner. Y 60 VIn ventilatorsofthe type to which my invention relates, the-passage of air fromthe fluev 5, through the ventilator and into the room to be ventilated through the open ends 3, 3 of the body portion or housing a of the venti'la- 65 tor, is controlled by damperS 6', respectively pivoted on rods 7, 7 the ends of which are se-v cured in the side walls 2, 2v of said housing. Said rods can be secured in positionina simplev manner 'without the use ofv separate 70 means, by upsetting the outer yends thereof so that they will be larger than the bearings rlhe dampers 6, 6 are mounted to turn on their supporting rods Vby means of bearings formed in lugs or bosses 8, 8 formed onl said dampers through which the rods 7 7 extend, said rods being loosely `fitted'to their respective bearings to linsure against bindcenter of saidhousing'and closely adjacent to 85 j the bottom of the housing. The closed positions of said dampers aredefined byA inwardly projecting lugs y9, 9 formed on the base of the ventilator housing 'which limit turning movement of the dampers in 'a direction to Yclose 90 rthem, yto fully closed position.

g The' main portions of the dampers', 6 which extend over the portions ofthe bottom openings between their respective pivot bearings and. opposite ends of said bottom openings, are preferably arched on a rather ylong radius whereby the air discharged from said ventilators will be deflected along the floor, thus eliminating currents of `air passing upwardly directly from the discharge.

openings of said ventilators so that they Will strike persons occupying seats immediately adjacent to saidventilators. j .j As shown, the top wall 1 of the ventilator vis slightly crowned. As shown,- also, bars lO, 10 connect opposite ends ofthe top Wall lof the housing a with the base portion thereof, said bars operating both to reinforce and strengthen said housing and also to prevent ingand sticking of said dampers on said rods.` 80

articles from being placed into the ventilator, 1,10 f j Lns Yes'

which might tend to obstruct the same and thus prevent the designed operation of the ventilator,either in whole or in part.

As shown, there are three bars at each end of the ventilator housing arranged substantially equal distances apart, but the number f ymay' be increased or decreased if desired, ,or

said bars may be omitted entirely. Y

As shown, also, the inner edges of lthebars 10, 10 preferably extend on the arc of a circle saidl dampers lare preferably provided `in their free ends with notches 11 positioned in line with said vbars and of sufhcient size to insure adequate 'clearance between said bars and the dampers.

vThe dampers 6, 6 also comprise portions 6.2, 63 which, when the dampers are closed, are adapted to close the portion of the bottom opening4 of the ventilator between the pivots thereof, said damper sections 62, 63 terminating short of the transverse center line of the ventilator housing to provide necessary clearance between them. f' Y In accordance with Amy invention, the dampers 6,L 6 aremaintained normally closed by gravity or equivalent means, and are adapted'to be turned pivotally to open themby means asfollowsz--Formed on the dampers 6, 6 adjacent to their respective pivk ots, are lugs 12, 12. Both sides or surfaces of the lug 12 curve upwardly over the space between the pivots of thedampers, the relation being preferably such that when said damper 12 is closed, the end of said lug willy extend somewhat beyond a vertical line drawn midwaybetween the pivots'of the dainpers. The 'outerend of the lug 12 on the damper 6 is positioned andproportioned yso that, when both dampers are closed, the outer end 0f said lug will engage. the lsurface 13 on the lugl2, which, for purposes of convenient reference, will be designatedits inner surface, substantially halfway between the pivots of the dampers. 'With the described construction, it is obvious that depression of the outer end of the lug 12 will impart turning movement to the damper 6 to open the same, and

will also depress the lug 12, which will, in

turn, impart turning movement to the valve 6 to open it.

f For the ventilator to operate efficiently, it is important that the turning movement iinparted to' both dampers shall be through arcs of substantially equal length, and in accordance with my invention, the lugs 12, 12 will be shaped and proportioned to effect this result.

' In any given case, this relation can be ascertained graphically, by means'of layouts showing the ,dampers in fully closed and open positions vand in one or more intermediate'po sitions. v

for exerting pressu lug Yto depress it.

In the preferable construction shown, pressure is adapted to be leXerted'upon the free end of the lugy 12 to de ress the same and thus to open the dampers y means of a screw 14 having threaded Vengagement with a `hole formed in the lower end of a boss 15 which depends from the inner side of the top wall 1 of theventilatorhousing a in proper. position so tha-tfthe lower end 'of the screw 14 will engage the lug 12 at a point substantially-'halfway between the damper pivots. Obviously, as' said adjusting screw is screwed down to depress the end of the lug 12, the end of said screw will slide alongfthe outer surface of' said lug towards the ypivot* of the damper 6,

while, at the same time, the end of the lug 12 will slide along the inner surface 13 of the lug 12, and also towards the damper 6. Y y

In the preferable construction shown, the head of the screw 141 is positionedin a recess 16formed in the outer end of the boss 15, said recess and screw 'beingso proportioned that the outer end of the Vscrew will be enclosed in said recess in all operative positions thereof, from fully open to fully closed position of the dampers 6, 6, thus e'ectually eliminating all danger of ythe clothing of persons and otherarticles catching on the end of the screw'and beingV torn, as lmight happen if the end of the screw projected above the top of the ventilator housing. v

In accordance with my inventi0n,as it relates to providing improved and simplified meansfor securing the housing of the ventilator in position with the open bottom therevofin communication with the flue v 5, said securing means compriseflugs 17 which depend from the base ofthe ventilator housing a substantiallyk in line withgthe'side walls 2, 2` thereof, in proper relative positions so that the distances between the outer sides of said lugs will be substantially equal 'to .the corresponding dimension of the flue 5 so that said lugs will enter said flue withslight clearance, and threaded through holes formed in Vsaid lugs are set screws 18, theends of which pivot lof the engage the sides ofthe flue 5 at points oppo l site said lugs, respectively,y Y. p

I claim:

v wardly inclined in a direction awayfrom the free end of the damper and the outer end of which' terminates at aV distance from the damper pivot and at the opposite side thereof from the freeend of the damper, and means re on the free end of said 1. In a' floor ventilator ofthetype' speci.-A

1, in which the means for exerting pressure on the damper turning lug consists of a screw threaded through a hole formed in a wall of the ventilator housing the end of which is adapted to impinge upon said lug adjacent to its outer end. Y

3. A iioor ventilator as specified in claim l, in which the means for exerting pressure on the damper turning lug consists of a screw threaded through a hole formed in thetop wall of the ventilator housing, the free end of which is adapted to impinge upon said lug adjacent to its outer end.

4. A ioor ventilator as specified in claim l, in which the means for exerting pressure on the damper turning lug consists of a screw, a boss on the top wall of the ventilator housing provided with a hole with which said screw has threaded engagement, the end of said screw being adapt-ed to iinpinge upon the lug on the damper adjacent to its outer end, said boss being provided' with a recess outside of thel screw-threaded hole therein adapted to enclose the portion of said screw which projects beyond said screw-threaded hole in all operating positions thereof.

5. A floor ventilator as specilied in claiml l, in which the means for exerting pressure on the damper turning lug consists of a screw, a boss which depends from the top wall of the ventilator housing provided with a hole in its lower end with which said screw has threaded engagement, the end ofsaid screw being adapted to impinge upon the lugon the damper adjacent to its free end, said boss being provided with a recess in its upper end proportioned'to enolosethe upper end of said screw in all operating positions thereof.

' 6. ln a floor ventilator of the type specified,` the combination of -two dampers pivoted wit-hin thehousing of the ventilator, the pivots of said dampers being spaced apart, lugs upwardly inclinedaway from the pivot of the damper on which it is formed, and the outer end of the inner lug contacting with the inner surfaceof the outer lug,` and means to exert pressure on the outer surface of the outer lug.

7. A iioor ventilator as specified in claim` 6, in which the pivots of the dampers are positioned at substantially equal distanceson opposite sides of the transverse center line- Vof the ventilator housing.

8. A iloor ventilator as specified in claim I 1, in which the portion of the damper between its pivot and its free end is arched-upwards.

In witness' that l claim the foregoingv as my invention, I attix my signature this 12th y day of December, A. D. 1927.

MELVH FEIBER. 

